289228086 has 36 divisors (see below), whose sum is σ = 728975052. Its totient is φ = 82636344.

The previous prime is 289228061. The next prime is 289228087. The reversal of 289228086 is 680822982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289228087) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 163080 + ... + 164843.

It is an arithmetic number, because the mean of its divisors is an integer number (20249307).

Almost surely, 2^289228086 is an apocalyptic number.

289228086 is an abundant number, since it is smaller than the sum of its proper divisors (439746966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289228086 is a wasteful number, since it uses less digits than its factorization.

289228086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327945 (or 327935 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 289228086 is about 17006.7070886753. The cubic root of 289228086 is about 661.3227878371.

The spelling of 289228086 in words is "two hundred eighty-nine million, two hundred twenty-eight thousand, eighty-six".